Breaking the concrete pavement over the east half of the highway ...

Hand-grading the American Canal

American Dam - View of site from bridge. Photo taken on January ...

Conduit section "B" from north of Station 81 and 50 of the ...

American Dam - View from middle of river, P&H excavator driving ...

Looking from the south, gate number three is open, gate number ...

Cleaning the upstream slab of the American Canal (view from the ...

American Dam - View northwest from sandbar on eastside of river, ...

The bonded riprap used to reinforce panels one through eight of ...

The downstream slab of the American Dam as seen from the east ...

American Dam - View south from west end of foot-bridge. ...

Casting rock for the river levee (at stations 69 and 50) of the ...

The P & H dragline excavator casting rock to the river levee at ...

American Dam - View east from hill on west side; P&H clam-shell ...

Pouring the eastern half of the highway culvert of the American ...

The beginning of the downstream dyke of the western cofferdam. A ...

American Dam - View north from middle of river. Closing gap in ...

The downstream dyke of the western cofferdam (as seen from the ...

A Barber-Greene conveyor closes the gap in the downstream dyke ...

The temporary earth dyke across the floor slab near pier two of ...

The temporary earth dyke across the floor slab near pier two of ...

Raising the grade of the southern dyke of the western cofferdam ...

The view from the northwest (from pier nine) of men building the ...